AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND AND THERE ARE METAL CHIPS IN THE OIL PUMP-continued

TM 9-2835-255-34

3-2. TROUBLESHOOTING - CONTINUED

a. ACCESSORY GEARBOX (AGB) AND

( 8 ) ES-8.

AGB GEAR TRAIN TURNS

U N E V E N L Y (BINDS) WHEN TURNED BY

HIGH PRESSURE COMPRESSOR -

CONTINUED

HAND, LOW PRESSURE COMPRESSOR

RUBS OR BINDS WHEN TURNED BY

HAND AND THERE ARE METAL CHIPS

I N THE OIL PUMP TO OIL COOLER

FLUID FILTER. - CONTINUED

CONTINUED FROM STEP 1

CAUTION

Extreme care should be taken

when handling low pressure

turbine rotor shaft (1).

Banging, jarring or rough

handling will cause damage to

No. 5 bearing carbon seal.

Lift end (2) of shaft (1)

slightly to center shaft

(1).

then push shaft (1) in

to establish clearance

between power turbine disc

(3) and nozzle (4) and to

load No. 5 bearinq (5).

B. T u r n s h a f t ( 1 ) , l i s t e n a n d

feel for rubbing or binding.

C. C h e c k r o t a t i o n o f p o w e r

turbine in rear engine

subassembly (6) by turning

shouldered shaft (7)

clockwise. Shaft should turn

smoothly and no unusual

noises should be heard.

Do both shafts turn smoothly with

No unusual noises?

CONTINUED ON NEXT PAGE

Change 5

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